Crushing device used in pretreatment stage of sodium sulphide raw materials

Abstract

The invention discloses a crushing device used in the pretreatment stage of sodium sulphide raw materials. Before the device works, a worker places a finished product box below a discharging pipe. Then, a crushing motor is started, a triangular block is driven to rotate through a speed reducer, and the triangular block drives an extrusion crushing mechanism to act. At the same time, a roller driving motor is started, a crushing wheel rotates, the worker fills a crushing barrel with sodium sulphide producing raw materials including mirabilite and raw coal, the mirabilite and the raw coal are crushed and mixed under the action of the extrusion crushing mechanism, then flow across the discharging pipe and fall into the finished product box, and so far, the device finishes the functional action. The device can safely and reliably crush and mix the raw coal and the mirabilite, simultaneously carries out the two procedures, has low requirement on operation space, is favorable to keeping a clean working environment, and reduces the labor intensity of an operator.

Description

technical field [0001] The present invention relates to the treatment equipment of the pre-production raw material of sodium sulfide. Background technique [0002] Sodium sulfide is also called smelly alkali, smelly soda, yellow alkali, and alkali sulfide. Sodium sulfide is an inorganic compound, and pure sodium sulfide is a colorless knot [0003] Crystal powder; strong hygroscopicity, easily soluble in water; the aqueous solution is strongly alkaline; it will cause burns when it touches the skin and hair; therefore, sulfur [0004] Sodium chloride is commonly known as alkali sulfide. [0005] At present, there are mainly the following methods for producing sodium sulfide in China: ① coal powder reduction mirabilite method; ② sodium hydroxide absorption hydrogen sulfide method; ③ sodium sulfate and barium sulfide double decomposition method; ④ hydrogen reduction sodium sulfate method. Although the absorption method has absolute advantages in terms of energy consumption a...

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Problems solved by technology

However, the existing production method has the following disadvantages: 1. The cost of directly purchasing pulverized coal is relatively high; , the contact area is small, so when heating and reducing, it is easy to cause incomplete reaction of mirabilite and pulverized coal, incomplete calcination of pulverized coal, a large amount of waste gas is generated, and the output of sodium sulfide is low.

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